[1/2] Trucks buried in mud are seen in an area affected by flood in Sikkim in this undated handout image released by the Indian Army on October 5, 2023. India Army/Handout via REUTERS Acquire Licensing Rights Companies NHPC Ltd Follow KOLKATA/NEW DELHI, Oct 6 (Reuters) – At least 40 people were killed after a glacial lake burst its banks and triggered flash floods this week in the Indian Himalayas, government officials told Reuters on Friday as rescuers searched for dozens missing for a second day. The Lhonak Lake in the mountainous northeastern state of Sikkim overflowed on Wednesday after a…